So long story short I listen to binural beats and need headphonesand mp3 player that doesnt alter the sound an any way.( treble boost, base boost and eq auto tuning) I found the proper headphones so now I need the mp3 player. Most mp3 player's I'm finding are the Chinese ipod knockoffs or the expensive hifi devices that aim to completely change the listening experience. I need an mp3 player that has a frequency responce of 15 and allows you to turn off any eq settings to get pure flat unaltered sound. Any recommendations?